EP1010575B1 - Loading tailgate system with at least one lifting actuator - Google Patents

Loading tailgate system with at least one lifting actuator Download PDF

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Publication number
EP1010575B1
EP1010575B1 EP98123980A EP98123980A EP1010575B1 EP 1010575 B1 EP1010575 B1 EP 1010575B1 EP 98123980 A EP98123980 A EP 98123980A EP 98123980 A EP98123980 A EP 98123980A EP 1010575 B1 EP1010575 B1 EP 1010575B1
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EP
European Patent Office
Prior art keywords
lifting
actuator device
folding
electric motor
tail
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP98123980A
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German (de)
French (fr)
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EP1010575A1 (en
Inventor
Jens Herman Jensen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Soerensen Hydraulik Zweigniederlassung Ulfborg Filial af Sorensen Hydraulik GmbH
Original Assignee
Soerensen Hydraulik Zweigniederlassung Ulfborg Filial af Sorensen Hydraulik GmbH
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Application filed by Soerensen Hydraulik Zweigniederlassung Ulfborg Filial af Sorensen Hydraulik GmbH filed Critical Soerensen Hydraulik Zweigniederlassung Ulfborg Filial af Sorensen Hydraulik GmbH
Priority to DE59810358T priority Critical patent/DE59810358D1/en
Priority to EP98123980A priority patent/EP1010575B1/en
Priority to AT98123980T priority patent/ATE255510T1/en
Priority to NZ500575A priority patent/NZ500575A/en
Priority to CA002287612A priority patent/CA2287612A1/en
Priority to AU65313/99A priority patent/AU6531399A/en
Publication of EP1010575A1 publication Critical patent/EP1010575A1/en
Application granted granted Critical
Publication of EP1010575B1 publication Critical patent/EP1010575B1/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60PVEHICLES ADAPTED FOR LOAD TRANSPORTATION OR TO TRANSPORT, TO CARRY, OR TO COMPRISE SPECIAL LOADS OR OBJECTS
    • B60P1/00Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading
    • B60P1/44Vehicles predominantly for transporting loads and modified to facilitate loading, consolidating the load, or unloading having a loading platform thereon raising the load to the level of the load-transporting element
    • B60P1/4471General means for controlling movements of the loading platform, e.g. hydraulic systems
    • B60P1/4478Safety stops, switches

Definitions

  • the invention relates to a tail lift system for fastening on vehicles, especially trucks, each comprising an essentially parallelogram-shaped of two essentially parallel to each other spaced structures existing lifting and / or Folding structure, an essentially plate-shaped tail lift for lifting and lowering a load and possibly for Locking a storage space of the vehicle and one Lift actuator device for lifting and lowering the tail lift and possibly a folding actuator device for Swiveling the tail lift from the horizontal in the vertical and vice versa, with an electric motor provided the lifting action of the tail lift.
  • CH-A-672 616 is a tail lift system of the aforementioned Kind known in which a mutual pivoting Hydraulic cantilevered arms, pneumatic, electric motor and / or mechanical should be pivoted to each other. About that, how and what in the well-known document a little electric motor nothing is to be accomplished.
  • Tail lifts this and find a similar kind in particular use in trucks to deal with loads to be transported on the truck Location of the loading platform of the truck on the lane on which the truck is standing, to be able to lower, so that the load is then otherwise to Destination can be spent.
  • the load will be on the level of the road
  • the tail lift is at the level of the loading platform of the truck raised and then onto the loading platform spent.
  • tail lift off the horizontal in which they are loaded and unloaded was pivoted to the vertical so that the tail lift as a rear end of the loading area or a suitcase-shaped loading space can serve with other tail lift systems, the tail lift folded or folded and in a suitable place placed under the loading area of the truck or pivoted.
  • a so-called stroke actuator device uses the hydraulic, pneumatic, electrically or from combinations of such means is operated.
  • a folding actuator device used also can be operated in the manner described above.
  • Liftgate systems of the type described above have at least one actuator device, the at least with a structure of the parallelogram Interacting lifting or folding structure.
  • At least one stroke actuator device is present and at least one folding actuator device works in this way the Hubaktuator worn with the one structure of the parallelogram-shaped lifting and folding structure together, whereas the folding actuator device with the other structure of the lifting and folding structure cooperates.
  • the lift actuator device and, as in the tail lift system exists at all, also the folding actuator device are in relation to the lifting and lowering movement of the Tail lift and when a pivoting movement of the tail lift from horizontal to vertical and reversed, i.e. albeit one Folding actuator device is present from one suitable location on the vehicle attached control device controlled from, corresponding operating commands by an operator using suitable Controls on the actuator can be executed.
  • a central hydraulic system is provided that by means of one, by means of one or more electric motors operated pump is operated.
  • suitable Valve means between the pump and the stroke actuator and if applicable, the folding actuator can then be the respective actuator be operated.
  • a tail lift system includes a tail lift system a plurality of actuators which is the rule for example one or two stroke actuators and possibly one or two folding actuators, so are all these actuators via a hydraulic line network with said valve or a valve block via which the hydraulic control the stroke actuators and, if applicable, the folding actuators, the respective piston-cylinder systems in this case are connected.
  • the hydraulic fluid provided a tank, one or more of those already mentioned Pumps, one or more electric motors, relay controls and the like and a central control unit, through which the control of the tail lift system he follows. So it's after the tail lift system attached to a vehicle, many hydraulic and make electrical connections to the tail lift system to bring it to full functionality. This is, as can be easily recognized, with considerable manual work related to installation and Fixing connected what the tail lift system can be very costly. moreover are high storage costs for the entire individual parts the consequence and costly administration such stocking.
  • Tail lift systems Another important problem with tail lift systems the previous one, trained in the manner shown above Loading platform systems is that due to the Variety of electrical and hydraulic lines Type and other control devices for this often required space even for small vehicles is not present, so the tail lift system is flat not be used with these small vehicles can, although there is a basic need for it.
  • tail lift system Another problem with previous tail lift systems This type is when a hydraulic operated actuator, for example, due to a Failure of the hydraulic line fails, the entire tail lift system becomes unusable, i.e. also its minimal functions loses, which leads to such an equipped Vehicle in place of the occurred Defect must be repaired, since neither lifting the The tail lift can still fold the tail lift is to at least take the vehicle to a repair shop to be able to drive.
  • the stroke actuator device assigned to it Has electric motor
  • the electric motor at least causes the stroke action of the stroke actuator device
  • the electric motor directly on the stroke actuator device is arranged.
  • each stroke actuator has an electric motor assigned to this, so that only an electrical connection to a central Control device to be installed on the vehicle must, with electrical cables pre-assembled so well can be that they, with appropriate sockets or Only plug in on the central control unit in appropriate sockets and plugs to be inserted need, so that then immediately a full functionality is guaranteed.
  • the preparation of of the tail lift system can therefore the entire installation practically completed for the intended operation be so that the finished tail lift system actually only needs to be attached to the vehicle.
  • Tail lift system On Another significant advantage of the tail lift system according to the invention is that by mapping one electric motor each to one stroke actuator device actually maintain an emergency operation can be provided if, for example, at two Lift actuator devices an electric motor of a lift actuator fails. It goes without saying that the storage of such a simplified according to the invention Tail lift system can be drastically reduced can as well as the associated material expenditure for the management of the warehouse, since there are no complex to install Hydraulic systems and the like use Find.
  • the electric motor has proven to be advantageous to be provided directly on the stroke actuator device, so that minimal transmission paths from the electric motor drive, i.e. the output shaft of the electric motor for lifting and / or Folding actuator device can be achieved what Gear means and hydraulic elements for operating the Lifting and / or folding actuator device to a minimum reduced.
  • the direct attachment of the Electric motor on the lifting and / or folding actuator device if necessary also for maintenance and malfunction cases Disassembly or assembly for easy replacement the lifting and / or folding device together with the associated electric motor, i.e. so is simple Modular exchange possible.
  • the folding actuator device also has one of these assigned electric motors, the electric motor causes the folding action of the folding actuator device.
  • the electric motor causes the folding action of the folding actuator device.
  • the electric motor is integral with the lift and / or Folding actuator device designed, i.e. in In this case, the electric motor itself works via a threaded spindle and / or the like. as an immediate mechanical Actuator of the lifting and / or folding actuator device, i.e. in this case it becomes complete on the interposition of hydraulic fluids waived.
  • Such a configuration is appropriate constructive design well suited, in particular for tail lift systems on small vehicles to be attached to smaller ones Lifting loads are to be expected.
  • the lifting and / or folding actuator device in the form of a hydraulically operated To form piston cylinder means, i.e. the electric motor actually only for the operation of one also the respective piston cylinder device assigned to use the respective pump that the Hydraulic fluid for the lifting and lowering operation or Folding operation from horizontal to vertical and conversely, the tail lift moves or pumps.
  • the electric motor actually only for the operation of one also the respective piston cylinder device assigned to use the respective pump that the Hydraulic fluid for the lifting and lowering operation or Folding operation from horizontal to vertical and conversely, the tail lift moves or pumps.
  • the electric motor the lifting and / or folding device for execution centrally controllable by their lifting and / or folding movement and / or adjustable.
  • This central control or regulation takes place, for example, via an operating device, those with all connections to the individual electric motors, Switches, controls on the tail lift and other electrical equipment already in Completely during the manufacture of the tail lift system is producible so that a tail lift system equipped in this way in fact only with the vehicle must be connected or must be mounted on this and a suitable electrical line connection to electrical vehicle electrical system manufactured are needed. If this is carried out, this is the invention Cargo tailgate system completely in immediately ready for all of its functions.
  • Tail lift system 10 is a one in which only one stroke actuator device 16 is provided, the raising and lowering in vertical direction of the tail lift 15 causes on the a load, not shown here, for example of a roadway and the like raised to a height should be that of a loading platform of a vehicle 11 corresponds to the load on the loading area of a Vehicle 11 to spend. From vehicle 11 are here only shown a chassis, what the Understanding the tail lift system 10 is sufficient.
  • the Folding actuator device 17 causes the tail lift 15 from the horizontal as shown in FIG. 1 is into the vertical to be able to for example, the loading area of a vehicle 11 close or release them again open to unload or load loads enable.
  • tail lift systems 10 the stroke actuator device 16 and the folding actuator device 17 via hydraulic lines 19, in Fig. 1 only a hydraulic line is shown symbolically, connected with a valve block and with a hydraulic fluid tank.
  • a hydraulic line is shown symbolically, connected with a valve block and with a hydraulic fluid tank.
  • the hydraulic system is one or it several pumps are integrated, which can be operated by means of a Electric motor or several electric motors, also not shown here, driven to the to generate the necessary pressure of the hydraulic fluid.
  • the most Vehicle-mounted control device 18 is over electrical control lines with the hydraulic circuit via controls such as relays, switches and the like connected in a manner known per se, so that the standard Movements of the tail lift 15 such as lifting and Lowering in the vertical and folding out of the vertical into the horizontal and back over the corresponding stroke actuator acted upon by hydraulic fluid or folding actuator devices can be effected.
  • the cargo tailgate system according to the invention shown in FIG. 2 10 differs from the known The tail lift system 10 according to FIG. 1 essentially in that the stroke actuator device 16 and the folding actuator device 17 each one have separately assigned electric motors 160, 170.
  • the electric motors 160, 170 are in the position shown in FIG. 2 shown tail lift system 10 on the side Folding actuator device 16 or the stroke actuator device 17 arranged.
  • this arrangement is here to be understood only as an example to the respective direct Assignment of the electric motors 160, 170 to the respective one Clarify lifting or folding actuator device.
  • the electric motor 160, 170 integral with the lifting and / or folding actuator device 16, 17 is formed, i.e. in fact in this or to arrange this, but it is also possible to lift and the folding actuator device 16, 17 to classic Way in the form of a hydraulically operated piston-cylinder device to train, i.e. the electric motor pumps, for example, to carry out the lifting movement of the Stroke actuator device 16 in a known manner hydraulic means in this, whereas the one for the folding actuator device 17 belonging electric motor 170 on classic Way hydraulic fluid in the folding actuator device pumps in so that the folding actuator device 17 Swiveling movement of the tail lift 15, for example from the vertical to the horizontal.
  • the tail lift system 10 can be opened be attached to a vehicle 11 in a known manner, see EP-A-0808 747. It includes, like known tail-lift systems 10 also, each an essential parallelogram, of two essentially parallel spaced structures 13, 14 existing Lifting and / or folding structure 12. This is in itself known way the substantially plate-shaped Tailgate 15 attached, here as a continuous Element is shown.
  • the tail lift 15 can also, as already mentioned above, a so-called Folding loading tailgate.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Auxiliary Methods And Devices For Loading And Unloading (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

The plate-shaped loading board e.g. tail board (15) is used for lifting and lowering a load, and possibly for closing a stowing space of the vehicle. A lifting actuator is used for lowering and lifting the loading board, and a hinged actuator unit swivels the loading board from the horizontal to the vertical and vice versa. The lifting actuator (16) has an electric motor (160) assigned to this so that the motor effects at least the lifting action of the lifting actuator unit (16). The hinged actuator unit (17) has an electric motor (170) assigned to this. The electric motor (170) effects the hinge action of the hinge actuator unit.

Description

Die Erfindung betrifft ein Ladebordwandsystem zur Befestigung an Fahrzeugen, insbesondere Lastkraftfahrzeugen, umfassend jeweils ein im wesentlichen parallelogrammförmiges, aus zwei im wesentlichen parallel voneinander beabstandeten Tragwerken bestehendes Hub- und/oder Klapptragwerk, eine im wesentlichen plattenförmige Ladebordwand zum Heben und Absenken einer Last und ggf. zum Verschließen eines Stauraumes des Fahrzeuges und eine Hubaktuatoreinrichtung zum Heben und Senken der Ladebordwand sowie ggf. eine Klappaktuatoreinrichtung zum Verschwenken der Ladebordwand von der Horizontalen in die Vertikale und umgekehrt, wobei ein Elektromotor vorgesehen ist, der die Hubaktion der Ladebordwand bewirkt. The invention relates to a tail lift system for fastening on vehicles, especially trucks, each comprising an essentially parallelogram-shaped of two essentially parallel to each other spaced structures existing lifting and / or Folding structure, an essentially plate-shaped tail lift for lifting and lowering a load and possibly for Locking a storage space of the vehicle and one Lift actuator device for lifting and lowering the tail lift and possibly a folding actuator device for Swiveling the tail lift from the horizontal in the vertical and vice versa, with an electric motor provided the lifting action of the tail lift.

Aus der CH-A-672 616 ist ein Ladebordwandsystem der vorgenannten Art bekannt, bei dem eine gegenseitige Verschwenkung quer zu einem Träger auskragende Tragarme hydraulisch, pneumatisch, elektromotorisch und/oder mechanisch gegenseitig verschwenkt werden sollen. Darüber, wie und wozu in dem bekannten Dokument etwas elektromotorisch bewirkt werden soll, ist nichts ausgeführt.From CH-A-672 616 is a tail lift system of the aforementioned Kind known in which a mutual pivoting Hydraulic cantilevered arms, pneumatic, electric motor and / or mechanical should be pivoted to each other. About that, how and what in the well-known document a little electric motor nothing is to be accomplished.

Des weiteren ist ein anderes Ladebordwandsystem dieser Art bekannt (EP-A-0 808 747). Ladebordwände dieser und ähnlicher Art finden insbesondere Anwendung bei Lastkraftfahrzeugen, um mit dem Lastkraftfahrzeug zu transportierende Lasten am Einsatzort von der Ladeplattform des Lastkraftfahrzeuges auf die Fahrbahn, auf dem das Lastkraftfahrzeug steht, absenken zu können, so daß die Last dann anderweitig zum Bestimmungsort verbracht werden kann. Das gleiche gilt für den Beladungsvorgang eines Lastkraftfahrzeuges, d.h. die Last wird auf die sich auf der Fahrbahnebene befindliche Ladebordwand aufgebracht, die Ladebordwand wird auf die Höhe der Ladeplattform des Lastkraftfahrzeuges angehoben und nachfolgend auf die Ladeplattform verbracht. Ist der Ent- bzw. Beladevorgang beendet, wird bei einigen Ladebordwandsystemen die Ladebordwand aus der Horizontalen, in der sie sich zum Be- und Entladen befand, in die Vertikale verschwenkt, so daß die Ladebordwand als rückwärtiger Abschluß der Ladefläche bzw. eines kofferartig ausgestalteten Laderaumes dienen kann, bei anderen Ladebordwandsystemen wird die Ladebordwand gefaltet bzw. zusammengeklappt und an geeigneter Stelle unter die Ladefläche des Lastkraftfahrzeuges verbracht bzw. verschwenkt.Another tail lift system is this Type known (EP-A-0 808 747). Tail lifts this and find a similar kind in particular use in trucks to deal with loads to be transported on the truck Location of the loading platform of the truck on the lane on which the truck is standing, to be able to lower, so that the load is then otherwise to Destination can be spent. The same goes for for the loading process of a truck, i.e. the load will be on the level of the road Tail lift applied, the tail lift is at the level of the loading platform of the truck raised and then onto the loading platform spent. When the unloading or loading process is finished, with some tail lift systems the tail lift off the horizontal in which they are loaded and unloaded was pivoted to the vertical so that the tail lift as a rear end of the loading area or a suitcase-shaped loading space can serve with other tail lift systems, the tail lift folded or folded and in a suitable place placed under the loading area of the truck or pivoted.

Für das Heben und Senken der Ladebordwand in im wesentlichen horizontale Ausrichtung für den Be- und Entladevorgang von der Ebene der Ladefläche eines Lastkraftfahrzeuges auf die Fahrbahn und von der Fahrbahn auf die Ebene der Ladefläche wird eine sogenannte Hubaktuatoreinrichtung verwendet, die hydraulisch, pneumatisch, elektrisch oder aus Kombinationen derartiger Mittel betrieben wird. Für das Verschwenken der Ladebordwand für das Öffnen und Schließen des eigentlichen Laderaumes aus der Horizontalen in die Vertikale und umgekehrt wird eine Klappaktuatoreinrichtung verwendet, die ebenfalls auf voraufgeführte Weise betrieben werden kann. Ladebordwandsysteme der vorbeschriebenen Art können somit zumindest eine Aktuatoreinrichtung aufweisen, die zumindest mit einem Tragwerk des parallelogrammförmigen Hub- oder Klapptragwerkes zusammenwirkt. Sind sowohl wenigstens eine Hubaktuatoreinrichtung vorhanden und wenigstens eine Klappaktuatoreinrichtung, so arbeitet die Hubaktuatoreinrichtung mit dem einen Tragwerk des parallelogrammförmigen Hub- und Klapptragwerkes zusammen, wohingegen die Klappaktuatoreinrichtung mit dem anderen Tragwerk des Hub- und Klapptragwerkes zusammenwirkt.For essentially lifting and lowering the tail lift horizontal alignment for loading and unloading from the level of the loading area of a truck onto the road and from the road to the The level of the loading area is a so-called stroke actuator device uses the hydraulic, pneumatic, electrically or from combinations of such means is operated. For swiveling the tail lift for opening and closing the actual cargo space from horizontal to vertical and vice versa a folding actuator device used, also can be operated in the manner described above. Liftgate systems of the type described above have at least one actuator device, the at least with a structure of the parallelogram Interacting lifting or folding structure. Are both at least one stroke actuator device is present and at least one folding actuator device works in this way the Hubaktuatoreinrichtung with the one structure of the parallelogram-shaped lifting and folding structure together, whereas the folding actuator device with the other structure of the lifting and folding structure cooperates.

Die Hubaktuatoreinrichtung und, so beim Ladebordwandsy-stem überhaupt vorhanden, auch die Klappaktuatoreinrich-tung werden in bezug auf die Hub- und Absenkbewegung der Ladebordwand und, wenn eine Schwenkbewegung der Ladebordwand von der Horizontalen in die Vertikale und umgekehrt ausgeführt werden soll, d.h. wenn auch eine Klappaktuatoreinrichtung vorhanden ist, von einer an geeigneter Stelle am Fahrzeug angebrachten Bedienungseinrichtung aus gesteuert, wobei entsprechende Bedienungsbefehle durch eine Bedienungsperson mittels geeigneter Bedienungselemente an der Betätigungseinrichtung ausgeführt werden können. Regelmäßig ist für die Betätigung des bzw. der Hubaktuators bzw. Hubakturatoren und, soweit vorhanden, des Klappaktuators bzw. der Klappaktuatoren ein zentrales Hydrauliksystem vorgesehen, das mittels einer, mittels eines oder mehrerer Elektromotoren betriebenen Pumpe betrieben wird. Über geeignete Ventilmittel zwischen der Pumpe und dem Hubaktuator und ggf. dem Klappaktuator kann dann der jeweilige Aktuator betätigt werden. Umfaßt beispielsweise ein Ladebordwandsystem eine Mehrzahl von Aktuatoren, was die Regel ist, beispielsweise ein oder zwei Hubaktuatoren und ggf. ein oder zwei Klappaktuatoren, so sind alle diese Aktuatoren über ein Hydraulikleitungsnetz mit dem besagten Ventil bzw. einem Ventilblock verbunden, über das die Hydrauliksteuerung der Hubaktuatoren und ggf. der Klappaktuatoren, die in diesem Falle jeweilige Kolbenzylindersysteme sind, verbunden. Zudem ist für das Hydraulikmittel ein Tank vorgesehen, eine oder mehrere der schon erwähnten Pumpen, einer oder mehrere Elektromotoren, Relaissteuerungen und dergleichen und eine zentrale Bedienungseinheit, über die die Steuerung des Ladebordwandsystems erfolgt. Es sind also, nachdem das Ladebordwandsystem an einem Fahrzeug befestigt ist, noch viele Hydraulik- und Elektroverbindungen auszuführen, um das Ladebordwandsystem zur vollen Funktionsfähigkeit zu bringen. Dieses ist, wie leicht erkennbar, mit erheblicher manueller Tätigkeit im bezug auf Installation und Befestigung verbunden, was das Ladebordwandsystem grundsätzlich sehr kostenträchtig werden läßt. Zudem sind für die gesamten Einzelteile hohe Lagerhaltungskosten die Folge und eine kostenträchtige Verwaltung derartiger Lagerbevorratung.The lift actuator device and, as in the tail lift system exists at all, also the folding actuator device are in relation to the lifting and lowering movement of the Tail lift and when a pivoting movement of the tail lift from horizontal to vertical and reversed, i.e. albeit one Folding actuator device is present from one suitable location on the vehicle attached control device controlled from, corresponding operating commands by an operator using suitable Controls on the actuator can be executed. Is regular for actuation of the stroke actuator or actuators and, if available, the folding actuator or the folding actuators a central hydraulic system is provided that by means of one, by means of one or more electric motors operated pump is operated. About suitable Valve means between the pump and the stroke actuator and if applicable, the folding actuator can then be the respective actuator be operated. For example, includes a tail lift system a plurality of actuators which is the rule for example one or two stroke actuators and possibly one or two folding actuators, so are all these actuators via a hydraulic line network with said valve or a valve block via which the hydraulic control the stroke actuators and, if applicable, the folding actuators, the respective piston-cylinder systems in this case are connected. It is also for the hydraulic fluid provided a tank, one or more of those already mentioned Pumps, one or more electric motors, relay controls and the like and a central control unit, through which the control of the tail lift system he follows. So it's after the tail lift system attached to a vehicle, many hydraulic and make electrical connections to the tail lift system to bring it to full functionality. This is, as can be easily recognized, with considerable manual work related to installation and Fixing connected what the tail lift system can be very costly. moreover are high storage costs for the entire individual parts the consequence and costly administration such stocking.

Ein anderes wichtiges Problem bei Ladebordwandsystemen der bisherigen, auf voraufgeführte Weise ausgebildeten Ladebordwandsystemen besteht darin, daß aufgrund der Vielzahl der Leitungen elektrischer und hydraulischer Art sowie sonstiger Steuerungseinrichtungen der dafür benötigte Platz vielfach bei kleinen Fahrzeugen gar nicht vorhanden ist, so daß das Ladebordwandsystem eben bei diesen kleinen Fahrzeugen gar nicht benutzt werden kann, obwohl grundsätzlich dafür ein Bedürfnis besteht.Another important problem with tail lift systems the previous one, trained in the manner shown above Loading platform systems is that due to the Variety of electrical and hydraulic lines Type and other control devices for this often required space even for small vehicles is not present, so the tail lift system is flat not be used with these small vehicles can, although there is a basic need for it.

Ein weiteres Problem bei bisherigen Ladebordwandsystemen dieser Art besteht darin, das dann, wenn ein hydraulisch betriebener Aktuator beispielsweise aufgrund eines Defekts der Hydraulikleitung ausfällt, das ganze Ladebordwandsystem unbrauchbar wird, d.h. auch seine Minimalfunktionen verliert, was dazu führt, daß ein so ausgerüstetes Fahrzeug an Ort und Stelle des aufgetretenen Defekts repariert werden muß, da weder ein Anheben der Ladebordwand noch ein Klappen der Ladebordwand möglich ist, um zumindest mit dem Fahrzeug zu einer Reparaturstätte fahren zu können.Another problem with previous tail lift systems This type is when a hydraulic operated actuator, for example, due to a Failure of the hydraulic line fails, the entire tail lift system becomes unusable, i.e. also its minimal functions loses, which leads to such an equipped Vehicle in place of the occurred Defect must be repaired, since neither lifting the The tail lift can still fold the tail lift is to at least take the vehicle to a repair shop to be able to drive.

Es ist somit Aufgabe der vorliegenden Erfindung, ein Ladebordwandsystem der eingangs genannten Art zuschaffen, mit dem eine drastische Reduzierung der Einzelteile möglich ist, aus denen ein Ladebordsystem normalerweise besteht, ohne daß die Funktionsfähigkeit des Ladebordwandsystems eingeschränkt wird, mit dem ein höheres Maß an Betriebssicherheit gegenüber bekannten Ladebordwandsystmen dieser Art erreicht werden soll, mit dem eine drastische Reduzierung des Installationsaufwandes des Ladebordwandsystems an einem Fahrzeug, an dem es bestimmungsgemäß angebaut und verwendet werden soll, möglich ist, daß auch an kleinen Fahrzeugen angebracht werden kann, bei dem derartige Systeme bisher nicht angebracht werden konnten, das einfach im Aufbau und weitaus kostengünstiger als bisherige Ladebordwandsysteme herstellbar und am Fahrzeug installierbar ist und daß die Lagerhaltungskosten für derartige Ladebordwandsysteme ebenfalls drastisch reduziert werden können.It is therefore an object of the present invention to provide a tail lift system procure of the type mentioned at the beginning, with which a drastic reduction of the individual parts is possible is what make up a loading board system normally exists without the operability of the tail lift system is restricted with a higher degree operational reliability compared to known tail lift systems of this kind should be achieved with one drastic reduction of the installation effort of the Tail lift system on a vehicle on which it is intended cultivated and used is that can also be attached to small vehicles can, in which such systems are not yet appropriate could be, the simple to set up and much cheaper producible as previous tail lift systems and can be installed on the vehicle and that Storage costs for such tail lift systems can also be drastically reduced.

Gelöst wird die Aufgabe gemäß der Erfindung dadurch, daß die Hubaktuatoreinrichtung den dieser zugeordneten Elektromotor aufweist, wobei der Elektromotor wenigstens die Hubaktion der Hubaktuatoreinrichtung bewirkt, und der Elektromotor direkt an der Hubaktuatoreinrichtung angeordnet ist.The object is achieved according to the invention in that the stroke actuator device assigned to it Has electric motor, the electric motor at least causes the stroke action of the stroke actuator device, and the electric motor directly on the stroke actuator device is arranged.

Mittels der erfindungsgemäßen Lösung wird vorteilhafterweise eine Dezentralisierung des Antriebs der Hubaktuatoreinrichtung erreicht, d.h. jeder Hubaktuator weist einen diesem jeweils zugeordneten Elektromotor auf, so daß lediglich eine elektrische Verbindung zu einer zentralen Steuerungseinrichtung am Fahrzeug installiert werden muß, wobei Elektroleitungen so gut vorkonfektioniert werden können, daß sie, mit entsprechenden Buchsen oder Steckern versehen nur noch am zentralen Steuergerät in entsprechende Buchsen und Stecker hineingesteckt zu werden brauchen, so daß dann sofort eine vollständige Funktionsfähigkeit gewährleistet ist. Bei der Herstellung des Ladebordwandsystems kann somit die gesamte Installation für den bestimmungsgemäßen Betrieb praktisch fertiggestellt sein, so daß das fertige Ladebordwandsystem faktisch nur noch am Fahrzeug befestigt werden muß. Ein weiterer wesentlicher Vorteil des erfindungsgemäßen Ladebordwandsystems besteht darin, daß durch die Zuordnung je eines Elektromotors zu je einer Hubaktuatoreinrichtung faktisch auch noch ein Notbetrieb aufrecht erhalten werden kann, wenn beispielsweise bei zwei vorgesehenen Hubaktuatoreinrichtungen ein Elektromotor eines Hubaktuators ausfällt. Es versteht sich zudem von selbst, daß die Lagerhaltung eines derart erfindungsgemäß vereinfachten Ladebordwandsystems drastisch reduziert werden kann ebenso wie der damit verbundene materielle Aufwand für die Verwaltung des Lagers, da keine aufwendig zu installierenden Hydrauliksysteme und dergleichen Verwendung finden.By means of the solution according to the invention is advantageously a decentralization of the drive of the stroke actuator device reached, i.e. each stroke actuator has an electric motor assigned to this, so that only an electrical connection to a central Control device to be installed on the vehicle must, with electrical cables pre-assembled so well can be that they, with appropriate sockets or Only plug in on the central control unit in appropriate sockets and plugs to be inserted need, so that then immediately a full functionality is guaranteed. In the preparation of of the tail lift system can therefore the entire installation practically completed for the intended operation be so that the finished tail lift system actually only needs to be attached to the vehicle. On Another significant advantage of the tail lift system according to the invention is that by mapping one electric motor each to one stroke actuator device actually maintain an emergency operation can be provided if, for example, at two Lift actuator devices an electric motor of a lift actuator fails. It goes without saying that the storage of such a simplified according to the invention Tail lift system can be drastically reduced can as well as the associated material expenditure for the management of the warehouse, since there are no complex to install Hydraulic systems and the like use Find.

Als vorteilhaft hat es sich herausgestellt, den Elektromotor direkt an der Hubaktuatoreinrichtung vorzusehen, so daß minimalste Übertragungswege vom Elektromotorantrieb, d.h. der Abtriebswelle des Elektromotors zur Hubund/oder Klappaktuatoreinrichtung erreicht werden, was Getriebemittel und Hydraulikelemente zum Betrieb der Hub- und/oder Klappaktuatoreinrichtung auf ein Minimum reduziert. Zudem gestattet die direkte Anbringung des Elektromotors an der Hub- und/oder Klappaktuatoreinrichtung ggf. auch bei Wartungsfällen und Störungsfällen zum Zwecke des einfachen Austausches die Demontage bzw. Montage der Hub- und/oder Klappeinrichtung zusammen mit dem dazugehörigen Elektromotor, d.h. so ist auf einfache Weise ein modularer Austausch möglich.The electric motor has proven to be advantageous to be provided directly on the stroke actuator device, so that minimal transmission paths from the electric motor drive, i.e. the output shaft of the electric motor for lifting and / or Folding actuator device can be achieved what Gear means and hydraulic elements for operating the Lifting and / or folding actuator device to a minimum reduced. In addition, the direct attachment of the Electric motor on the lifting and / or folding actuator device if necessary also for maintenance and malfunction cases Disassembly or assembly for easy replacement the lifting and / or folding device together with the associated electric motor, i.e. so is simple Modular exchange possible.

Gemäß einer vorteilhaften Ausgestaltung der Erfindung weist ebenfalls die Klappaktuatoreinrichtung einen dieser zugeordneten Elektromotoren auf, wobei der Elektromotor die Klappaktion der Klappaktuatoreinrichtung bewirkt. Prinzipiell gilt für die Klappaktuatoreinrichtung alles das an Vorteilen, was zuvor schon im Zusammenhang mit der Hubaktuatoreinrichtung bzw. den Hubaktuatoreinrichtungen gesagt worden ist, wobei der erfindungsgemäße Vorteil im bezug auf die Klappaktuatoreinrichtung auch für den Fall gilt, wenn bei einem Ladebordwandsystem nicht nur eine Klappaktuatoreinrichtung sondern zwei und ggf. mehrere Klappaktuatoreinrichtungen vorgesehen sind.According to an advantageous embodiment of the invention the folding actuator device also has one of these assigned electric motors, the electric motor causes the folding action of the folding actuator device. In principle, the same applies to the folding actuator device all of the advantages that were previously related with the stroke actuator device or the stroke actuator devices has been said, the invention Advantage in relation to the folding actuator device too applies to the case when with a tail lift system not just one folding actuator device but two and if necessary, several folding actuator devices are provided.

Bei einer vorteilhaften Ausgestaltung des Ladebordwandsystems ist der Elektromotor integral mit der Hubund/oder Klappaktuatoreinrichtung ausgebildet, d.h. in diesem Falle wirkt der Elektromotor selbst über eine Gewindespindel und/oder dergl. als unmittelbares mechanisches Betätigungsorgan der Hub- und/oder Klappaktuatoreinrichtung, d.h. in diesem Falle wird vollständig auf die Zwischenschaltung von Hydraulikmitteln verzichtet. Eine derartige Ausgestaltung ist bei entsprechender konstruktiver Auslegung gut geeignet, insbesondere bei Ladebordwandsystemen, die an kleinen Fahrzeugen angebracht werden sollen, bei denen kleinere Hublasten zu erwarten sind.In an advantageous embodiment of the tail lift system the electric motor is integral with the lift and / or Folding actuator device designed, i.e. in In this case, the electric motor itself works via a threaded spindle and / or the like. as an immediate mechanical Actuator of the lifting and / or folding actuator device, i.e. in this case it becomes complete on the interposition of hydraulic fluids waived. Such a configuration is appropriate constructive design well suited, in particular for tail lift systems on small vehicles to be attached to smaller ones Lifting loads are to be expected.

Vorteilhaft ist es auch, die Hub- und/oder Klappaktuatoreinrichtung in Form einer hydraulisch betriebenen Kolbenzylindereinrichtung auszubilden, d.h. den Elektromotor tatsächlich ausschließlich zum Betrieb einer ebenfalls der jeweiligen Kolbenzyllindereinrichtung zugeordneten jeweiligen Pumpe zu verwenden, die das Hydraulikmittel für den Hub- und Senkbetrieb bzw. den Klappbetrieb von der Horizontalen in die Vertikale und umgekehrt der Ladebordwand bewegt bzw. pumpt. Bei dieser Ausgestaltung ist faktisch der Aufbau und der Betrieb realisiert, wie er bei Ladebordwandsystemen klassischer Art anzutreffen ist, nur mit dem Unterschied, daß hier eine tatsächliche Dezentralisierung des Antriebs und der Steuerung des erfindungsgemäßen Ladebordwandsystems gegenüber den bekannten, klassischen Ladebordwandsystemen erreicht wird. Ein geringer Vorrat an Hydraulikmitteln, der sonst normalerweise in Tanks mitgeführt werden muß, kann beispielsweise durch in das System unmittelbar eingebaute Hydraulikmittel in Form von sogenannten "Pads" mitgeführt und somit immer bereitgestellt werden, wobei diese "Pads" bei Bedarf das Hydraulikmittel abgeben. Gleichwohl sind auch bei dieser dezentralisierten klassischen Ausgestaltung des Ladebordwandsystems mit Kolbenzylindereirichtungen als Aktuatoren die gleichen Vorteile gegenüber den bisherigen Ladebordwandsystemen erreichbar, wie sie oben dargestellt wurden. It is also advantageous for the lifting and / or folding actuator device in the form of a hydraulically operated To form piston cylinder means, i.e. the electric motor actually only for the operation of one also the respective piston cylinder device assigned to use the respective pump that the Hydraulic fluid for the lifting and lowering operation or Folding operation from horizontal to vertical and conversely, the tail lift moves or pumps. At this Design is actually the structure and operation realized like it is more classic with tail lift systems You can only find them with the difference that here an actual decentralization of the drive and the Control of the tail lift system according to the invention compared to the well-known, classic tail lift systems is achieved. A small supply of hydraulic fluid, who would normally be carried in tanks can be, for example, by in the system immediately installed hydraulic fluid in the form of so-called "pads" carried and thus always provided be these "pads" if necessary the hydraulic fluid submit. Nevertheless, also with this decentralized classic design of the tail lift system with piston cylinder directions as Actuators have the same advantages over the previous ones Tail lift systems accessible as above were shown.

Schließlich ist gemäß einer vorteilhaften weiteren Ausgestaltung des Laebordwandsystems der Elektromotor der Hub- und/oder der Klappeinrichtung zur Ausführung von deren Hub- und/oder Klappbewegung zentral steuerbar und/oder regelbar. Diese zentrale Steuerung bzw. Regelung erfolgt beispielsweise über eine Bedieneinrichtung, die mit allen Verbindungen zu den einzelnen Elektromotoren, Schaltern, Bedienungselementen auf der Ladebord-wand und sonstigen elektrischen Einrichtungen schon im Zuge der Herstellung des Ladebordwandsystems vollständig herstellbar ist, so daß ein derart ausgerüstetes Ladebordwandsystem faktisch nur noch mit dem Fahrzeug verbunden werden muß bzw. an dieses montiert werden muß und eine geeignete elektrische Leitungsverbindung zum elektrischen Bordnetz des Fahrzeuges hergestellt zu werden braucht. Ist dieses ausgeführt, ist das erfindungsgemäße Ladungsbordwandsystem sofort vollständig in bezug auf alle seine Funktionen betriebsbereit.Finally, according to another advantageous Design of the Laebordwandsystem the electric motor the lifting and / or folding device for execution centrally controllable by their lifting and / or folding movement and / or adjustable. This central control or regulation takes place, for example, via an operating device, those with all connections to the individual electric motors, Switches, controls on the tail lift and other electrical equipment already in Completely during the manufacture of the tail lift system is producible so that a tail lift system equipped in this way in fact only with the vehicle must be connected or must be mounted on this and a suitable electrical line connection to electrical vehicle electrical system manufactured are needed. If this is carried out, this is the invention Cargo tailgate system completely in immediately ready for all of its functions.

Die Erfindung wird nun unter Bezugnahme auf die nachfolgenden schematischen Zeichnungen anhand eines Ausführungsbeispieles eingehend beschrieben. Darin zeigen:

Fig. 1
ein Ladebordwandsystem, wie es im Stand der Technik bekant ist, bei dem eine vollständige Installation mittels Elektroleitungen und Hydraulikleitungen zu einer Bedieneinrichtung erforderlich ist, wobei die Hydraulikleitungen, die Elektroleitungen hier aus vereinfachungsgründen weggelassen worden sind, und
Fig. 2
ein Ladebordwandsystem gemäß der Erfindung, bei dem ein Elektromotor direkt an einer Klappaktuatoreinrichtung und ein Elektromotor direkt an einer Hubaktuatoreinrichtung angeordnet sind.
The invention will now be described in detail with reference to the following schematic drawings using an exemplary embodiment. In it show:
Fig. 1
a tail lift system, as is known in the prior art, in which a complete installation by means of electric lines and hydraulic lines to an operating device is required, the hydraulic lines, the electric lines being omitted here for the sake of simplicity, and
Fig. 2
a tail lift system according to the invention, in which an electric motor is arranged directly on a folding actuator device and an electric motor is arranged directly on a lifting actuator device.

Es wird zunächst Bezug genommen auf Fig. 1, in der ein herkömmliches Ladebordwandsystem dargestellt ist. Herkömmliche Ladebordwandsysteme 10 sind allgemein bekannt, so daß hier der Aufbau und die Funktion nur kurz erklärt werden. Ein typisches Ladebordwandsystem 10 ist beispielsweise in der EP-A-0808 747 beschrieben, auf die insofern bezug genommen wird. Bei dem hier dargestellten Ladebordwandsystem 10 handelt es sich um ein solches, bei dem lediglich eine Hubaktuatoreinrichtung 16 vorgesehen ist, die ein Anheben und Absenken in vertikaler Richtung der Ladebordwand 15 bewirkt, auf dem eine hier nicht dargestellte Last beispielsweise von einer Fahrbahn und dergleichen auf eine Höhe angehoben werden soll, die der einer Ladeplattform eines Fahrzeuges 11 entspricht, um die Last auf die Ladefläche eines Fahrzeugs 11 zu verbringen. Vom Fahrzeug 11 sind hier lediglich Träger eines Chassis dargestellt, was zum Verständnis des Ladebordwandsystems 10 ausreicht. Die Klappaktuatoreinrichtung 17 bewirkt, daß die Ladebordwand 15 von der Horizontalen wie in der Fig. 1 dargestellt ist, in die Vertikale geklappt werden kann, um beispielsweise die Ladefläche eines Fahrzeuges 11 zu verschließen bzw. diese wieder freizugeben bzw. zu öffnen, um den Ent- bzw. Beladevorgang mit Lasten zu ermöglichen.Reference is first made to FIG. 1, in which a conventional tail lift system is shown. Conventional tail lift systems 10 are general known, so here the structure and function only be briefly explained. A typical tail lift system 10 is described for example in EP-A-0808 747 which is referred to in this respect. The one shown here Tail lift system 10 is a one in which only one stroke actuator device 16 is provided, the raising and lowering in vertical direction of the tail lift 15 causes on the a load, not shown here, for example of a roadway and the like raised to a height should be that of a loading platform of a vehicle 11 corresponds to the load on the loading area of a Vehicle 11 to spend. From vehicle 11 are here only shown a chassis, what the Understanding the tail lift system 10 is sufficient. The Folding actuator device 17 causes the tail lift 15 from the horizontal as shown in FIG. 1 is into the vertical to be able to for example, the loading area of a vehicle 11 close or release them again open to unload or load loads enable.

Es sei an dieser Stelle noch darauf hingewiesen, daß sogenannte Faltladebordwände, die in einen geeigneten Bereich zwischen Ladefläche und Chassis eines Fahrzeuges 11 geklappt werden können, eine Klappaktuatoreinrichtung 17 nicht benötigen, da eine Klappfunktion im vorbeschriebenen Sinne für diese Art der Ausgestaltung der Ladebordwandsysteme 10 nicht erforderlich ist. Bei dem in Figur 1 dargestellten Ladebordwandsystemen 10 sind die Hubaktuatoreinrichtung 16 und die Klappaktuatoreinrichtung 17 über Hydraulikleitungen 19, in Fig. 1 ist lediglich eine Hydraulikleitung symbolisch dargestellt, mit einem Ventil block verbunden und mit einem Hydraulikmitteltank. In das Hydrauliksystem ist eine oder es sind mehrere Pumpen integriert, die mittels eines Elektromotors bzw. mehrerer Elektromotoren, ebenfalls hier nicht dargestellt, angetrieben werden, um den nötigen Druck des Hydraulikmittels zu erzeugen. Die am Fahrzeug angebrachte Bedieneinrichtung 18 ist über elektrische Steuerleitungen mit der Hydraulikschaltung über Steuerelemente wie Relais, Schalter und dergleichen auf an sich bekannte Weise verbunden, so daß die standardmäßigen Bewegungen der Ladebordwand 15 wie Heben und Senken in der Vertikalen und ein Klappen aus der Vertikalen in die Horizontale und zurück über die entsprechend mit Hydraulikmittel beaufschlagten Hubaktuator- bzw. Klappaktuatoreinrichtungen bewirkt werden können.At this point it should be pointed out that so-called folding tail lifts that fit into a suitable Area between the loading area and chassis of a vehicle 11 can be folded, a folding actuator device 17 do not need, because a folding function in the above Sense for this type of design of the Loading tailgate systems 10 is not required. In which are shown in Fig. 1 tail lift systems 10 the stroke actuator device 16 and the folding actuator device 17 via hydraulic lines 19, in Fig. 1 only a hydraulic line is shown symbolically, connected with a valve block and with a hydraulic fluid tank. In the hydraulic system is one or it several pumps are integrated, which can be operated by means of a Electric motor or several electric motors, also not shown here, driven to the to generate the necessary pressure of the hydraulic fluid. The most Vehicle-mounted control device 18 is over electrical control lines with the hydraulic circuit via controls such as relays, switches and the like connected in a manner known per se, so that the standard Movements of the tail lift 15 such as lifting and Lowering in the vertical and folding out of the vertical into the horizontal and back over the corresponding stroke actuator acted upon by hydraulic fluid or folding actuator devices can be effected.

Das in Fig. 2 dargestellte erfindungsgemäße Ladungsbordwandsystem 10 unterscheidet sich gegenüber dem bekannten Ladebordwandsystem 10 gemäß Fig. 1 im wesentlichen dadurch, daß die Hubaktuatoreinrichtung 16 und die Klappaktuatoreinrichtung 17 jeweils einen diesen gesondert zugeordneten Elektromotor 160, 170 aufweisen. Die Elektromotoren 160, 170 sind bei dem in Fig. 2 dargestellten Ladebordwandsystem 10 seitlich an der Klappaktuatoreinrichtung 16 bzw. der Hubaktuatoreinrichtung 17 angeordnet. Diese Anordnung ist hier allerdings nur beispielhaft zu verstehen, um die jeweilige direkte Zuordnung der Elektromotoren 160, 170 zu der jeweiligen Hub- oder Klappaktuatoreinrichtung zuverdeutlichen.The cargo tailgate system according to the invention shown in FIG. 2 10 differs from the known The tail lift system 10 according to FIG. 1 essentially in that the stroke actuator device 16 and the folding actuator device 17 each one have separately assigned electric motors 160, 170. The electric motors 160, 170 are in the position shown in FIG. 2 shown tail lift system 10 on the side Folding actuator device 16 or the stroke actuator device 17 arranged. However, this arrangement is here to be understood only as an example to the respective direct Assignment of the electric motors 160, 170 to the respective one Clarify lifting or folding actuator device.

Es ist auch möglich, daß der Elektromotor 160, 170 integral mit der Hub- und/oder Klappaktuatoreinrichtung 16, 17 ausgebildet ist, d.h. faktisch in dieser bzw. diesen anzuordnen, es ist aber auch möglich, die Hub-und die Klappaktuatoreinrichtung 16, 17 auf klassische Weise in Form einer hydraulisch betriebenen Kolben-Zylindereinrichtung auszubilden, d.h. der Elektromotor pumpt beispielsweise zur Ausführung der Hubbewegung der Hubaktuatoreinrichtung 16 auf bekannte Weise Hydraulik-mittel in diese, wohingegen der zur Klappaktuatoreinrichtung 17 gehörige Elektromotor 170 auf klassische Weise Hydraulikmittel in die Klappaktuatoreinrichtung hineinpumpt, damit die Klappaktuatoreinrichtung 17 die Schwenkbewegung der Ladebordwand 15 beispielsweise von der Vertikalen in die Horizontale ausführen kann.It is also possible for the electric motor 160, 170 integral with the lifting and / or folding actuator device 16, 17 is formed, i.e. in fact in this or to arrange this, but it is also possible to lift and the folding actuator device 16, 17 to classic Way in the form of a hydraulically operated piston-cylinder device to train, i.e. the electric motor pumps, for example, to carry out the lifting movement of the Stroke actuator device 16 in a known manner hydraulic means in this, whereas the one for the folding actuator device 17 belonging electric motor 170 on classic Way hydraulic fluid in the folding actuator device pumps in so that the folding actuator device 17 Swiveling movement of the tail lift 15, for example from the vertical to the horizontal.

Das Ladebordwandsystem 10 gemäß der Erfindung kann auf bekannte Weise an einem Fahrzeug 11 befestigt werden, siehe EP-A-0808 747. Es umfaßt, wie bekannte Ladebordwandsysteme 10 auch, jeweils ein wesentliches parallelogrammförmiges, aus zwei im wesentlichen parallel voneinander beabstandeten Tragwerken 13, 14 bestehendes Hub- und/oder Klapptragwerk 12. Daran ist auf an sich bekannte Weise die im wesentlichen plattenförmige Ladebordwand 15 befestigt, die hier als durchgehendes Element dargestellt ist. Die Ladebordwand 15 kann aber auch, wie schon voranstehend erwähnt, eine sogenannte Faltladebordwand sein. The tail lift system 10 according to the invention can be opened be attached to a vehicle 11 in a known manner, see EP-A-0808 747. It includes, like known tail-lift systems 10 also, each an essential parallelogram, of two essentially parallel spaced structures 13, 14 existing Lifting and / or folding structure 12. This is in itself known way the substantially plate-shaped Tailgate 15 attached, here as a continuous Element is shown. The tail lift 15 can also, as already mentioned above, a so-called Folding loading tailgate.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1010
LadebordwandsystemLiftgate system
1111
Fahrzeugvehicle
1212
Hub- und KlapptragwerkLifting and folding structure
1313
erstes Tragwerkfirst structure
1414
zweites Tragwerksecond structure
1515
LadebordwandLiftgate
1616
HubaktuatoreinrichtungHubaktuatoreinrichtung
160160
Elektromotorelectric motor
1717
Klappaktuatoreinrichtungfolding actuator
170170
Elektromotorelectric motor
1818
Bedieneinrichtungoperating device
1919
Hydraulikleitunghydraulic line

Claims (5)

  1. Tail-gate lift system (10) for attachment to vehicles (11), in particular heavy goods vehicles, comprising in each case an essentially parallelogram-shaped lifting and/or folding load-bearing structure (12) consisting of two essentially parallel load-bearing structures (13, 14) spaced a distance apart, an essentially platform-shaped tail-gate lift (15) for raising and lowering a load and optionally to close a stowage space of the vehicle (12) and a lifting actuator device (16) to raise and lower the tail-gate lift, optionally together with a folding actuator device (17) to pivot the tail-gate lift (15) from the horizontal to the vertical and vice versa, whereby there is provided an electric motor (160) that brings about the lifting action of the tail-gate lift (15), characterized in that the lifting actuator device (16) has the electric motor (160) assigned to the latter, whereby the electric motor (160) brings about at least the lifting action of the lifting actuator device (16) and the electric motor (160) is arranged directly on the lifting actuator device (16).
  2. Tail-gate lift system according to Claim 1, characterized in that the folding actuator device (17) has an electric motor (170) assigned to it, whereby the electric motor (170) brings about the folding action of the folding actuator device (17).
  3. Tail-gate lift system according to one or both of the Claims 1 or 2, characterized in that the electric motor (160; 170) is an integral part of the lifting and/or folding actuator device (16; 17).
  4. Tail-gate lift system according to one or more of the Claims 1 to 3, characterized in that the lifting and/or folding actuator device (16; 17) is designed in the form of a hydraulically-operated piston/cylinder device.
  5. Tail-gate lift system according to one or more of the Claims 1 to 4, characterized in that the electric motor (160; 170) of the lifting and/or folding actuator device (16; 17) can be controlled and/or regulated centrally to perform its lifting and/or folding movement.
EP98123980A 1998-12-17 1998-12-17 Loading tailgate system with at least one lifting actuator Expired - Lifetime EP1010575B1 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
DE59810358T DE59810358D1 (en) 1998-12-17 1998-12-17 Loading tailgate system with at least one lift actuator
EP98123980A EP1010575B1 (en) 1998-12-17 1998-12-17 Loading tailgate system with at least one lifting actuator
AT98123980T ATE255510T1 (en) 1998-12-17 1998-12-17 TAIL-LIFT SYSTEM WITH AT LEAST ONE LIFT ACTUATOR
NZ500575A NZ500575A (en) 1998-12-17 1999-10-22 Loading plank operating system including an electric motor associated with each lift actuating mechanism
CA002287612A CA2287612A1 (en) 1998-12-17 1999-10-26 Loading plank operating system with lifting actuator
AU65313/99A AU6531399A (en) 1998-12-17 1999-12-16 Loading plank operating system with lifting actuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP98123980A EP1010575B1 (en) 1998-12-17 1998-12-17 Loading tailgate system with at least one lifting actuator

Publications (2)

Publication Number Publication Date
EP1010575A1 EP1010575A1 (en) 2000-06-21
EP1010575B1 true EP1010575B1 (en) 2003-12-03

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EP98123980A Expired - Lifetime EP1010575B1 (en) 1998-12-17 1998-12-17 Loading tailgate system with at least one lifting actuator

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EP (1) EP1010575B1 (en)
AT (1) ATE255510T1 (en)
AU (1) AU6531399A (en)
CA (1) CA2287612A1 (en)
DE (1) DE59810358D1 (en)
NZ (1) NZ500575A (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE336399T1 (en) * 2003-02-05 2006-09-15 Soerensen Hydraulik Ulfborg TAIL-LIFT SYSTEM WITH AT LEAST ONE FOLDING ACTUATOR AND ONE LIFT ACTUATOR
ITRM20030187A1 (en) 2003-04-24 2004-10-25 Paolo Castorino ANTI-ACCIDENT PROTECTION DEVICE, FOR
WO2018023950A1 (en) * 2016-08-02 2018-02-08 刘宏伟 Caution device for raising/lowering liftgate

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Publication number Priority date Publication date Assignee Title
DE6809482U (en) * 1968-12-02 1970-11-12 Karl Dipl Ing Schmitt ELECTROMECHANICAL DEVICE ATTACHED TO TRUCKS FOR LOADING AND UNLOADING.
NL7116269A (en) * 1971-04-22 1972-10-24
JPS6033686B2 (en) * 1979-10-08 1985-08-05 極東開発工業株式会社 Cargo handling equipment for freight vehicles
AT392446B (en) * 1986-06-13 1991-03-25 Marte Fahrzeugbau Ges M B H & LOADING LIFT FOR A TRAIN OR TRAILER VEHICLE
ATE246105T1 (en) 1996-05-21 2003-08-15 Soerensen Hydraulik Ulfborg TAIL-LIFT SYSTEM

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CA2287612A1 (en) 2000-06-17
NZ500575A (en) 2001-09-28
EP1010575A1 (en) 2000-06-21
AU6531399A (en) 2000-06-22
DE59810358D1 (en) 2004-01-15
ATE255510T1 (en) 2003-12-15

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